140UK-4211615218 N/A Deep hole drill with internal cooling 25 xd VHM TiAIN WN 7mm
Part Nnumber
140UK-4211615218
Description
Deep hole drill with internal cooling 25 xd VHM TiAIN WN 7mm
The product with part number 140UK-4211615218 (Deep hole drill with internal cooling 25 xd VHM TiAIN WN 7mm)
is from company N/A and distributed with basic unit price 380,18 EUR. Minimal order quantity is 1 pc.
Deep hole drill 25 x D -Factory standard -Ultra super fine grain solid metal -Type RT 100 T with inner cooling -Spiral angle 30° -Vertex angle 135° -Core thickness greater than normal, without taper -Shaft cylindrical Note: For drill holes with very narrow Ø tolerances and very good surface quality. The deep hole drill can be sharpened multiple times. Approach for deep hole drilling 1. Mill the first surface perpendicular to the entry angle of the bore hole 2. Drill a pilot hole (tolerance F9) with a minimum depth of 1 x D 3. Slowly advance into the pilot hole with ca. 300 U/min. and f = 500 mm/min 4. Only now switch on the coolant pressure and required speed 5. Continually drill (without pecking) to the full drilling depth 6. For through holes with an oblique exit, the feed speed Vf must be reduced ca. 1 mm before breaking through to 40% 7. After reaching the drilling depth, turn off the speed and cooling lubrication 8. Now in rapid reverse move out of the hole Important note: When drilling, all deep hole drills must be guided and must never be moved freely with full rotation speed in the machine room. Conventional cooling lubricant of at least 40 bar. Ø m7/h7: 7 mm Total length: 237 mm Spiral length: 197 mm shaft Ø h6: 8 mm Steel <850 HRC: 100 Steel <1000 N: 100 Steel <1400 N: 100 Steel <42 HRC: 70 Steel <52 HRC: 50 INOX: 100
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